Use single-quotes in $installdir value in case prefix includes a string metacharacter.

diff --git a/pm_filter b/pm_filter
index 374e9a44fca9ca43233e22e306831dbbc2e6e02c..351e0b4d99a0104434d687c71fd474f14f6adb08 100755 (executable)
--- a/pm_filter
+++ b/pm_filter
@@ -7,7 +7,7 @@ BEGIN {
 }
 
 if (/INSTALLDIR_AUTOREPLACE/) {
-       $_=qq{our \$installdir="$prefix";};
+       $_=qq{our \$installdir='$prefix';};
 }
 elsif (/VERSION_AUTOREPLACE/) {
        $_=qq{our \$version="$ver";};